Default implementation Gnss HAL
Test: On Angler, GPS location available on Maps. All interfaces other
than AGnssRil, AGnssNavigationMessage and GnssNi are functionally tested. AGnssRil and
AGnssNavigationMessage are not implemented by conventional GPS HALs in Google devices that would be
upgrading to O.
Bug:31974439
Change-Id: I66225225ed79bc1735d6dd27954b1f9f69ffc557
diff --git a/gnss/1.0/default/ThreadCreationWrapper.h b/gnss/1.0/default/ThreadCreationWrapper.h
new file mode 100644
index 0000000..df0a9e4
--- /dev/null
+++ b/gnss/1.0/default/ThreadCreationWrapper.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
+#define ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
+
+#include <pthread.h>
+#include <vector>
+#include <cutils/log.h>
+
+typedef void (*threadEntryFunc)(void* ret);
+
+/*
+ * This class facilitates createThreadCb methods in various GNSS interfaces to wrap
+ * pthread_create() from libc since its function signature differs from what is required by the
+ * conventional GNSS HAL. The arguments passed to pthread_create() need to be on heap and not on
+ * the stack of createThreadCb.
+ */
+struct ThreadFuncArgs {
+ ThreadFuncArgs(void (*start)(void*), void* arg) : fptr(start), args(arg) {}
+
+ /* pointer to the function of type void()(void*) that needs to be wrapped */
+ threadEntryFunc fptr;
+ /* argument for fptr to be called with */
+ void* args;
+};
+
+/*
+ * This method is simply a wrapper. It is required since pthread_create() requires an entry
+ * function pointer of type void*()(void*) and the GNSS hal requires as input a function pointer of
+ * type void()(void*).
+ */
+void* threadFunc(void* arg);
+
+/*
+ * This method is called by createThreadCb with a pointer to the vector that
+ * holds the pointers to the thread arguments. The arg and start parameters are
+ * first used to create a ThreadFuncArgs object which is then saved in the
+ * listArgs parameters. The created ThreadFuncArgs object is then used to invoke
+ * threadFunc() method which in-turn invokes pthread_create.
+ */
+pthread_t createPthread(const char* name, void (*start)(void*), void* arg,
+ std::vector<std::unique_ptr<ThreadFuncArgs>> * listArgs);
+
+#endif